My Rottweiler grew out of it. Great crate...$145 obo brand new it's $229... Heavy duty frame: made from corrosion-resistant steel,strong and durable, hard to be damaged,nontoxic finished surface keep your dog health,suitable for most medium and large dogs,two locks with the safety buckles to prevent the dogs from opening the door and escaping. Double door & locking caster design: The front door is suitable for pet in and out,the top door also can be opened for you interacting with your dog. 360 degree rotated locking casters can help you to move crate anywhere easily and lock the wheels to keep the crate in place. Easy to assemble:All hardware pack included,just need to fit it with four wheels and eight screw bolts, locks were pre-assembled,Just takes 3-5 minutes to complete. Easy to clean:Removable (slide-out) plastic tray helps you to catch the fallen dog food and excrement,and allows you to wipe and clean easily. Overall Dimensions: 37.5"L X 25.5"W X 32"H; Internal height of the dog cage (excluding wheels): 32"H; Metal pipe spacing:2"; Metal"slat-like" floor spacing:1" Color: Black.